Hit Nitz 4 6 "Daily Control" Head Lice Spray was initially tested on our own children's hair for a period of one year. During this time, when the preventative control spray was not used - nits came home on heads! At all other times when the children were diligent and remembered to spray Hit Nitz 4 6 "Daily Control" Head Lice Spray in their normal morning routine - they managed to have a completely nit free zone.
Subsequently, Hit Nitz 4 6 conducted a pilot in vivo clinical trial of "Daily Control" Head Lice Spray involving approximately 80 children. This trial resulted in Hit Nitz 4 6 "Daily Control" Head Lice Spray being 92% effective in keeping head lice at bay.
The efficacy of Hit Nitz 4 6 all natural head lice killer, "Once Off" Head Lice Lotion, was conducted in vitro. In this trial, "Once Off" Head Lice Lotion was 100% successful in killing all head lice present within the recommended treatment time (4 hours).
The following published articles on head lice and treatments may be of interest to you: